Hello! Unfortunately there is no way to do this currently in Agile Central, unless you want to write some custom scripts with the Agile Central API.
There is a planned feature to create rich story templates such that you could create a template story for each feature type with the tags you need. You can follow this idea at https://ideas.rallydev.com/ideas/D739 or add your own idea to Idea Manager for roadmap consideration.
If you would like more details or have questions, please let me know, and have a great day!